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Finding the Fourth Proportional to 341.45, 511.29 and 286.48

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Solution

The fourth proportional to 341.45, 511.29 and 286.48 is: 428.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.45 : 511.29 = 286.48 : x
  2. Step 2: Convert to fraction form
    341.45/511.29 = 286.48/x
  3. Step 3: Cross multiply
    341.45x = 511.29 × 286.48
  4. Step 4: Simplify right side
    341.45x = 146,472.52
  5. Step 5: Solve for x
    x = 146,472.52/341.45
  6. Step 6: Final answer
    x = 428.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.